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mikroSDK Library

PAC1954 click

Rating:

5

Author: MIKROE

Last Updated: 2021-06-04

Package Version: 1.0.0.0

mikroSDK Library: 1.0.0.0

Category: Measurements

Downloaded: 2350 times

Not followed.

License: MIT license  

PAC1954 Click is a compact add-on board that contains an energy monitoring solution. This board features the PAC1954, a four-channel DC power/energy monitor from Microchip Technology.

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  • mikroSDK Library 2.0.0.0
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mikroSDK Library Blog

PAC1954 click

PAC1954 click

Native view of the PAC1954 click board.

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PAC1954 click

PAC1954 click

Front and back view of the PAC1954 click board.

View full image

Library Description

The library covers all the necessary functions to control the PAC1954 click board.

Key functions:

  • void pac1954_single_write( uint8_t reg_addr, uint8_t data_in ) - This function writes a single data byte to the selected register.
  • void pac1954_refresh_cmd( void ) -
    The readable registers for the VBUS, VSENSE, Power, accumulator outputs and accumulator count are updated by the 
    REFRESH command and the values will be static until the next REFRESH command
    .
  • float pac1954_get_calc_measurement( uint8_t meas_sel, uint8_t ch_sel, uint8_t avg_sel, uint8_t meas_mode ) -
    This function will call function for getting the selected measurement data and will perform all necessary calculations to get measurement value in a standard unit.

Examples description

The application is composed of three sections :

  • System Initialization - Performs the configuration for all necessary pins and
      peripherals.
  • Application Initialization - Performs the driver initialization and executes
      a default configuration of the PAC1954 click board.
  • Application Task - (code snippet) First calls a REFRESH command to allow all measurement and config registers to be updated. After that reads the calculated
      measurement results of channel 1 and sends the results to the usb uart port
      every 1 second.
void application_task ( )
{
    pac1954_refresh_cmd( );

    vsource = pac1954_get_calc_measurement( PAC1954_MEAS_SEL_V_SOURCE, 
                                            PAC1954_CH_SEL_CH_1, 
                                            PAC1954_AVG_SEL_ENABLE, 
                                            PAC1954_MEAS_MODE_BIPOLAR_FSR );
    isense = pac1954_get_calc_measurement( PAC1954_MEAS_SEL_I_SENSE, 
                                           PAC1954_CH_SEL_CH_1, 
                                           PAC1954_AVG_SEL_ENABLE, 
                                           PAC1954_MEAS_MODE_BIPOLAR_FSR );
    power = pac1954_get_calc_measurement( PAC1954_MEAS_SEL_P_SENSE, 
                                          PAC1954_CH_SEL_CH_1, 
                                          PAC1954_NULL, 
                                          PAC1954_MEAS_MODE_BIPOLAR_FSR );
    
    FloatToStr( vsource, log_txt );
    Ltrim( log_txt );
    float_cut( );
    mikrobus_logWrite( "V(source) is ", _LOG_TEXT );
    mikrobus_logWrite( log_txt, _LOG_TEXT );
    mikrobus_logWrite( " V", _LOG_LINE );

    FloatToStr( isense, log_txt );
    Ltrim( log_txt );
    float_cut( );
    mikrobus_logWrite( "I(sense) is ", _LOG_TEXT );
    mikrobus_logWrite( log_txt, _LOG_TEXT );
    mikrobus_logWrite( " A", _LOG_LINE );

    FloatToStr( power, log_txt );
    Ltrim( log_txt );
    float_cut( );
    mikrobus_logWrite( "P(sense) is ", _LOG_TEXT );
    mikrobus_logWrite( log_txt, _LOG_TEXT );
    mikrobus_logWrite( " W", _LOG_LINE );
    mikrobus_logWrite( "", _LOG_LINE );

    Delay_ms( 1000 );
}

Other mikroE Libraries used in the example:

  • I2C
  • UART

Additional notes and informations

Depending on the development board you are using, you may need USB UART clickUSB UART 2 click or RS232 click to connect to your PC, for development systems with no UART to USB interface available on the board. The terminal available in all MikroElektronika compilers, or any other terminal application of your choice, can be used to read the message.

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